[development doc updates]

[Fred L. Drake]

The development version of the documentation has been updated:

    http://python.sourceforge.net/devel-docs/

Update to docs beyond Python 2.2 beta 2:

Clarified a couple of points in the SAX API descriptions for startElement()
and startElementNS().

Better description of gc.garbage value (gc module).

Cleaned up & slightly modernized some sample code in the Python/C API and
Extending & Embedding manuals.